sing-box/box.go
2022-08-20 09:13:00 +08:00

240 lines
5.9 KiB
Go

package box
import (
"context"
"io"
"os"
"time"
"github.com/sagernet/sing-box/adapter"
"github.com/sagernet/sing-box/experimental"
"github.com/sagernet/sing-box/inbound"
"github.com/sagernet/sing-box/log"
"github.com/sagernet/sing-box/option"
"github.com/sagernet/sing-box/outbound"
"github.com/sagernet/sing-box/route"
"github.com/sagernet/sing/common"
E "github.com/sagernet/sing/common/exceptions"
F "github.com/sagernet/sing/common/format"
)
var _ adapter.Service = (*Box)(nil)
type Box struct {
createdAt time.Time
router adapter.Router
inbounds []adapter.Inbound
outbounds []adapter.Outbound
logFactory log.Factory
logger log.ContextLogger
logFile *os.File
clashServer adapter.ClashServer
done chan struct{}
}
func New(ctx context.Context, options option.Options) (*Box, error) {
createdAt := time.Now()
logOptions := common.PtrValueOrDefault(options.Log)
var needClashAPI bool
if options.Experimental != nil && options.Experimental.ClashAPI != nil && options.Experimental.ClashAPI.ExternalController != "" {
needClashAPI = true
}
var logFactory log.Factory
var observableLogFactory log.ObservableFactory
var logFile *os.File
if logOptions.Disabled {
observableLogFactory = log.NewNOPFactory()
logFactory = observableLogFactory
} else {
var logWriter io.Writer
switch logOptions.Output {
case "", "stderr":
logWriter = os.Stderr
case "stdout":
logWriter = os.Stdout
default:
var err error
logFile, err = os.OpenFile(logOptions.Output, os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0o644)
if err != nil {
return nil, err
}
logWriter = logFile
}
logFormatter := log.Formatter{
BaseTime: createdAt,
DisableColors: logOptions.DisableColor || logFile != nil,
DisableTimestamp: !logOptions.Timestamp && logFile != nil,
FullTimestamp: logOptions.Timestamp,
TimestampFormat: "-0700 2006-01-02 15:04:05",
}
if needClashAPI {
observableLogFactory = log.NewObservableFactory(logFormatter, logWriter)
logFactory = observableLogFactory
} else {
logFactory = log.NewFactory(logFormatter, logWriter)
}
if logOptions.Level != "" {
logLevel, err := log.ParseLevel(logOptions.Level)
if err != nil {
return nil, E.Cause(err, "parse log level")
}
logFactory.SetLevel(logLevel)
} else {
logFactory.SetLevel(log.LevelTrace)
}
}
router, err := route.NewRouter(
ctx,
logFactory.NewLogger("router"),
logFactory.NewLogger("dns"),
common.PtrValueOrDefault(options.Route),
common.PtrValueOrDefault(options.DNS),
options.Inbounds,
)
if err != nil {
return nil, E.Cause(err, "parse route options")
}
inbounds := make([]adapter.Inbound, 0, len(options.Inbounds))
outbounds := make([]adapter.Outbound, 0, len(options.Outbounds))
for i, inboundOptions := range options.Inbounds {
var in adapter.Inbound
var tag string
if inboundOptions.Tag != "" {
tag = inboundOptions.Tag
} else {
tag = F.ToString(i)
}
in, err = inbound.New(
ctx,
router,
logFactory.NewLogger(F.ToString("inbound/", inboundOptions.Type, "[", tag, "]")),
inboundOptions,
)
if err != nil {
return nil, E.Cause(err, "parse inbound[", i, "]")
}
inbounds = append(inbounds, in)
}
for i, outboundOptions := range options.Outbounds {
var out adapter.Outbound
var tag string
if outboundOptions.Tag != "" {
tag = outboundOptions.Tag
} else {
tag = F.ToString(i)
}
out, err = outbound.New(
ctx,
router,
logFactory.NewLogger(F.ToString("outbound/", outboundOptions.Type, "[", tag, "]")),
outboundOptions)
if err != nil {
return nil, E.Cause(err, "parse outbound[", i, "]")
}
outbounds = append(outbounds, out)
}
err = router.Initialize(outbounds, func() adapter.Outbound {
out, oErr := outbound.New(ctx, router, logFactory.NewLogger("outbound/direct"), option.Outbound{Type: "direct", Tag: "default"})
common.Must(oErr)
outbounds = append(outbounds, out)
return out
})
if err != nil {
return nil, err
}
var clashServer adapter.ClashServer
if needClashAPI {
clashServer, err = experimental.NewClashServer(router, observableLogFactory, common.PtrValueOrDefault(options.Experimental.ClashAPI))
if err != nil {
return nil, E.Cause(err, "create clash api server")
}
router.SetTrafficController(clashServer)
}
return &Box{
router: router,
inbounds: inbounds,
outbounds: outbounds,
createdAt: createdAt,
logFactory: logFactory,
logger: logFactory.NewLogger(""),
logFile: logFile,
clashServer: clashServer,
done: make(chan struct{}),
}, nil
}
func (s *Box) Start() error {
for i, out := range s.outbounds {
if starter, isStarter := out.(common.Starter); isStarter {
err := starter.Start()
if err != nil {
for _, in := range s.inbounds {
common.Close(in)
}
for g := 0; g < i; g++ {
common.Close(s.outbounds[g])
}
var tag string
if out.Tag() == "" {
tag = F.ToString(i)
} else {
tag = out.Tag()
}
return E.Cause(err, "initialize outbound/", out.Type(), "[", tag, "]")
}
}
}
err := s.router.Start()
if err != nil {
return err
}
for i, in := range s.inbounds {
err = in.Start()
if err != nil {
for g := 0; g < i; g++ {
s.inbounds[g].Close()
}
var tag string
if in.Tag() == "" {
tag = F.ToString(i)
} else {
tag = in.Tag()
}
return E.Cause(err, "initialize inbound/", in.Type(), "[", tag, "]")
}
}
if s.clashServer != nil {
err = s.clashServer.Start()
if err != nil {
return E.Cause(err, "start clash api server")
}
}
s.logger.Info("sing-box started (", F.Seconds(time.Since(s.createdAt).Seconds()), "s)")
return nil
}
func (s *Box) Close() error {
select {
case <-s.done:
return os.ErrClosed
default:
close(s.done)
}
for _, in := range s.inbounds {
in.Close()
}
for _, out := range s.outbounds {
common.Close(out)
}
return common.Close(
s.router,
s.logFactory,
s.clashServer,
common.PtrOrNil(s.logFile),
)
}